Show repository tab for projects without a repository

Description

When creating a new project, the Repository tab is not shown. It's unclear then how to add a new file as this is ordinarily done by visiting the repository and clicking the + button to create a new file.

I've previously worked around this by creating a README, then creating the file. I further wasn't aware of the other + button on the project home page that allows you to create a file and I believe others aren't aware of this either from conversations we've had.

Proposal

Show the Repository tab for all projects and allow people to add files to repository from that page.